Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Your X-rays shows three calcified nodules which might be due to old and healed lesions probably due to old pulmonary tuberculosis. They are not active disease process and no treatment is required for it. They are not infectious too. We can get a clear picture in CT scan. Hope I have answered your query. Let me know if I can assist you further.